Active and Passive Transport at InterfacesVon der Universitat¨ Bayreuthzur Erlangung des Grades einesDoktors der Naturwissenschaften (Dr. rer. nat.)genehmigte AbhandlungvonSaeedeh Aliaskarisohigeboren am 22 Mai 1977 in Teheran/Iran1. Gutachter: Prof. Dr. Th .M. Fischer2. Prof. Dr. M. WeissTag der Einreichung: 05 .07. 2011Tag des Kolloquiums: 16. 09. 2011This thesis is dedicated to my mother, my father and Ali.1AcknowledgementI wish to express my sincere gratitude to my supervisor Professor Thomas Fischerregarding his kindness, motivation and unsparing helps that was the best incentivefor me during my PhD. Working under Professor Fischer’s supervision was a pre-cious opportunity in my life to experience a real scientiﬁc work. It was a pleasurefor me to work with him and I enjoyed the discussions we had in an interactive en-vironment. I have learned a lot from him and I will remain forever grateful to him.Many thanks also go out to Professor Jur¨ gen Kohler¨ for leting me use his lab-oratory and Marek Blaszczynski from whom I have learnt about electroformationof vesicles .Special thank - you for Dr. Natalia Wilke at the Universidad Nacional de Cordoba,Argentina. Collaborating and writing the paper on collapse with her in Bayreuthand Cordoba was a grate experience for me. This became possible with her niceattempt and invitation.I would also like to acknowledge my collaborators: Dr. Ziad Khattari at HashemiteUniversity, Jordan, Dr. Pietro.